With a fifth baby on the way, Chip and Joanna Gaines couldn't be happier, but it wasn't so long ago their family included just two. The HGTV stars had sidestepped a series of missed connections (they both attended Baylor University, but never met) and dating snafus (he showed up over an hour late to the first date — and didn't call for months!) to become the beloved couple they are today.

The former Fixer Upper hosts first met in 2001, when Joanna worked behind the counter at her dad's tire shop. She had appeared on the store's local TV ads, and Chip admitted to frequenting the Firestone franchise until he finally got the chance to try his pick-up line on her: "Hey, you're the girl from the commercials."

Punctuality aside, the first date went swimmingly, but Chip waited as long as possible to meet up again because of a bet with a roommate. "I'd made a bet with John to see who could hold out the longest before calling our dates back," Chip writes in The Magnolia Story. "I really wanted that fifty dollars from John! That's the only reason I didn't call."

After that, the duo hit it off, and it was only a matter of months until Chip popped the question. With their 15th anniversary on the horizon, here's everything we know about their big day:

Chip proposed at a shopping center.

He told Joanna they were headed to a concert four hours away, but brought her to a jewelry store in Archer City, Texas, instead. After he bent down on one knee (and she said yes!), they went inside so she could design her perfect ring: a round diamond in an antique-looking platinum setting.

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She never wants to upgrade her ring.

Years later, Chip offered Joanna the chance to swap out her stone for a bigger gem, but she was having none of it. "It wasn't a 'perfect' diamond, but it was perfect for me," she wrote in The Magnolia Story. "To me, my ring is part of our story."

And started fixing up homes soon after.

Not long after the couple tied the knot, they started on their first renovation together: their own home. "It was dumpy and it smelled bad," Joanna remembered on Instagram." To this day, if you ask us what our favorite house we ever lived in we both go back to this little white 800 sq ft home."